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Q:
An object with a mass of 78 kilograms is lifted through a height of 6 meters. How much work is done?

An object with a mass of 78 kilograms is lifted through a height of 6 meters. How much work is done?
A. 47.75 J
B. 468 J
C. 764.4 J
D. 4,586.4 J
25. A car with a mass of 2,000 kilograms is moving around a circular curve at a uniform velocity of 25 meters per second. The curve has a radius of 80 meters. What is the centripetal force on the car?
A. 625 N
B. 703 N
C. 15,625 N
D. 20,250 N

Feb 16 2012 03:56 PM

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